To ensure that the STYLPRO Makeup Brush Cleaner is not only faster, but also more efficient than traditional methods, an independent laboratory was employed to carry out the tests. Scientists deliberately applied 100,000 bacteria to a number of clean brushes. They then used an identical amount of makeup on each brush before cleaning - some using anti-bacterial soap and water, some using a well known branded brush cleanser and some using the STYLPRO Makeup Brush Cleaner. The tests proved that the STYLPRO Makeup Brush Cleaner is as good, if not better, at removing bacteria versus soap and water and branded makeup brush cleaner sprays. Visually the STYLPRO Makeup Brush Cleaner left brushes looking much cleaner too. But best of all, unlike all other methods, the brushes were completely dry and ready to re-use immediately.